We show that increasing the probability of obtaining a job offer through the network should raise the observed mean wage in jobs found through formal (non-network) channels relative to that in jobs found through the network. This prediction also holds at all percentiles of the observed wage...

From the perspective of someone who is both an economist and a former school board member, this paper assesses the use of test-score data by policy-makers and academic researchers. The absence of interval scales often makes the interpretation of test-scores and the indicators derived from them...